Engine



(No Model.) 2 Sheets--Sheet ,2.

J. M. SAILER. ENGINE...

No. 424,505. 7 Patented Apr. 1, 1890;

UNITED STATES PATENT FFICE.

JOHN M. SAILER, OF MILTON JUNCTION, ASSIGNOR TO THE FLEXIBLE ENGINE ANDTHRESHING MACHINE COMPANY, OF ROCK COUNTY, XVISCONSIN.

ENGINE.

SPECIFICATION forming part of Letters Patent No. 424,505, dated April 1,1890.

Application filed July 5 1889. Serial No. 316,631. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN M. SAILER, of Milton J nnction, in the countyof Rock'and State of ll isconsin, have invented new and usefulImprovements in Engines; and I do hereby declare the following to be afull, clear, and exact description of said invention, reference beinghad to the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

My invention relates to improvements in reciprocating engines. I

The object of the invention is to so simplify an engine that it can beconstructed with a small amount of mechanism and with as little expenseas possible, while securing the complete working power and usefulness ofthe engine.

In the drawings, Figure 1 is a perspective view of my complete device.Fig. 2 is a plan view of the same device. Fig. 3 is a verticallongitudinal section of the cylinder, steamchests, and pistons. Fig. 4is avertical transverse section of the cylinder and steam-chest on line4. 4 of Fig. 3. Fig. 5 is a central vertical longitudinal section of thecylinder with the pistons therein, showing a modified form of device forconnecting the pistons. Fig. 6 is a vertical transverse section of themodified form of engine 011 line 6 6 of Fig. 5. Fig. 7 is an end view ofthe piston used in the modified form of engine shown in Fig. 5. 4

The same letters refer to like parts in all the views.

The hollow cylinder A is supported, when the engine is intended forstationary use, conveniently by brackets 13 B on a base C. The cylinderA is divided centrally by a head D, through which is a transverse ductE. In the cylinder on each side of the head D is a piston F, whichpistons may be made solid, but

are preferably made hollow for reducing their weight. These pistons havecylindrical side secured to the cylinders by means of screwthreadedbolts or other equivalent means. The two pistons F F are of equal anduniform diameter, are longer than the respective chambers of thecylinder in which they travel and project at the two ends of thecylinder beyond 5 5 the same, and are connected rigidly togetherconveniently by means of a frame Lsecnred, respectively, to the outerends of the two pis tons by means of collars J J, which are a part ofthe frame and are secured fixedly to the pistons. The pistons may beconnected together by a rod 1, affixed to each and passing steam-tightthrough the head D. The pistons are located and secured in the frame inthe position with relation to each other and to the cylinder indicatedin Figs. 3 and 5, so that as one piston is at the inner end of itsstroke the other piston would be at the outer end of its stroke.

A steam-chest K is secured steam-tight upon the cylinder A centrally andis provided with a sliding cut-pit valve L, fitted steamtight, butmovable on the outer surface of the cylinder A, and havinga recess L ofsufficient length to provide a passage for steam from the ports MMalternately into the eduction-duct E. The ports M M through the cylinderA provide a passage from the steamchest to each of the chambers in thecylinder A, the ports being located one on each side of the head D. Thesliding'valveL is of such length that when it is at one end of thesteamchest K a passage is open from one cylinderchamber through a port Minto the ednctionpipe E, while the other'port M is not covered 8 5 bythe valve L, but is open from the steamchest K to the other chamber ofthe cylinder.

Two sliding bolts N N, one at each end, are fitted steam-tight into thevalve L, which bolts are each provided at its lower end with a shortrigid cross-bar N or lateral projections, which, when the valve is inproper po* sition therefor, drop down or are forced inwardly by thesteam in the chest K in front of the edge of the head D upon brackets OO, rigid on the head 'D, whereby the valve L is held in position againstendwise movement until the bolt N shall be raised from in front of thehead D. The bolts N N pass through the cylinder A in the ports M M,which are of greater lateral diameter than the bolts, whereby theendwise movement of the sliding valve L is provided for. Anoutwardlybent elastic arm P is affixed to the inner surface of the headof each piston, the free end of which arm, as the piston moves inwardly,engages the lower end of the boltN and raises itfrom in front of thehead D, forcing the bolt and valve L forward, carrying the valve L tothe other end of the steam-chest, thereby opening the port nearest theinwardly-movin g piston from the chamber into the steam-chest, the portinto the opposite chamber being in the meantime closed to the steam inthe chest K and opened to the eduction-duct E by the movement of thevalve L. A'recess R is provided in the head D to permit the movement ofthe arm P therein, carrying the bolt N, as before described. steam-tightin the valve L by means of packing S, held in place by a packing-nut S.

The eduction-duct E opens into a steamexhaust chamber T, provided withan exhaust-pipe T. A steam-supply pipe K leads into the steam-chest K.Two pitmen U U are pivoted on opposite sides of the piston at one end toone of the collars J and at the other extremity are attached to themechanism to be driven by the engine.

In the modified form of engine shown in Fig. 5 the frame I, forconnecting the two pistons outside of the cylinder, is omitted, and thepistons are connected rigidly together by a connecting-rod I, secured tothe heads of the pistons and passing steam-tight through the head D ofthe cylinder. A packing-nut R is provided, turning into the head D,whereby with packing underneath the connecting-rod may be madesteam-tight, but movable in the head D. In this form of construction theeduction-pipe E is divided into two parts E E, passing around theaperture for the connecting-rod'l'. The arm P, corresponding to the armP in the other form of engine, is made bifurcate for more convenient Thebolts N N are made and secure attachment to the head of the pis ton.

What I claim as new, and desire to secure by Letters Patent, is-

1; In an engine, the combination, with a cylinder provided with acentral head and a steam-chest affixed centrally to the cylinder havingports opening therefrom into the two chambers of the cylinder,respectively, of a slide-valve in the steam-chest, bolts movable in thevalve adapted to lock the valve in position, and an arm affixed to thepiston adapted to engage with a bolt in the sliding valve and releaseand move the valve by the movement of the piston, substantially asdescribed.

2. In an engine, the combination, with a cylinder having a central headprovided with a steam-eduction duct and a steam-chest afiixed centrallyto the cylinder provided with ports opening, respectively, into the twochambers of the cylinder, of a sliding valve within the steam-chest andelastic arms attached to the inner ends of the pistons, respectively,which arms are adapted, as the pistons reciprocate, to slide the valveforward and back, substantially as described.

3. In an engine, the combination, with a cylinder provided with acentral head, of a steam sliding valve located and adapted to closealternately the two ports opening from the chambers of the cylinder,sliding bolts in the sliding valve adapted alternately to engage thehead of the cylinder and lock the sliding valve in position, and armsattached to the inner ends of the pistons in the chambers of thecylinder, which arms are adapted to en gage the locking-bolts and raisethem from engagement. with the head of the cylinder and also to carrythe sliding valve, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN M. SAILER.

IVitnesses:

C. T. BENEDICT, ANNA FAUST.

